at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary()
at AlarmGenUI.TagProcDASvc.GetInstalledServersCompletedEventArgs.get_Result()
at AlarmGenUI.UserControls.AreaTreeBrowserEx.<.ctor>b__3(Object sender1, GetInstalledServersCompletedEventArgs e1)
at AlarmGenUI.TagProcDASvc.AlarmGenWcfClient.OnGetInstalledServersCompleted(Object state)